#xiala li{
		display: inline-block;
		margin: 10px;
		cursor: pointer;
		font-size: 12px;
		}
#xiala{
		height: 400px;
		opacity:0.6;
		display: none;
		margin-left: 10%;				
		width: 500px;
		text-align: center;
		z-index: 5;
		}